Phekolo ea metsi a litšila: khetho pakeng tsa polyaluminium chloride le aluminium sulfate

Lebaleng la ho hloekisa metsi a litšila, ka bobeli polyaluminium chloride (PAC) le aluminium sulfate li sebelisoa haholo joalo kali-coagulants. Ho na le phapang ea sebopeho sa lik'hemik'hale tsa mahlahana ana a mabeli, e leng se bakang ts'ebetso le ts'ebeliso ea bona e fapaneng. Lilemong tsa morao tjena, PAC e 'nile ea ratoa hanyane ka hanyane bakeng sa ts'ebetso ea eona e phahameng ea kalafo le lebelo. Sehloohong sena, re tla tšohla phapang pakeng tsa PAC le aluminium sulfate ho hloekisa metsi a litšila ho u thusa ho etsa khetho e nang le tsebo.

Taba ea pele, a re ithuteng ka polyaluminium chloride (PAC). Joalo ka inorganic polymer coagulant, PAC e na le solubility e ntle haholo mme e ka etsa li-flocs kapele. E bapala karolo ea coagulation ka ho se nke lehlakore ha motlakase le ho ts'oara marang-rang, 'me e sebelisoa hammoho le flocculant PAM ho tlosa litšila ka har'a metsi a litšila. Ha ho bapisoa le aluminium sulfate, PAC e na le bokhoni bo matla ba ho sebetsa le boleng bo betere ba metsi kamora ho hloekisoa. Ho sa le joalo, litšenyehelo tsa tlhoekiso ea metsi tsa PAC li tlase ho 15% -30% ho feta aluminium sulfate. Mabapi le ho sebelisa alkalinity metsing, PAC e na le tšebeliso e tlase mme e ka fokotsa kapa ea hlakola ente ea alkaline.

E latelang ke aluminium sulfate. Joaloka coagulant ea setso, aluminium sulfate e adsorbs le ho kopanya litšila ka aluminium hydroxide colloids e hlahisoang ke hydrolysis. Sekhahla sa eona sa ho qhibiliha se batla se fokola, empa se loketse ho hloekisa metsi a litšila ka pH ea 6.0-7.5. Ha ho bapisoa le PAC, aluminium sulfate e na le matla a tlase a kalafo le boleng ba metsi a hloekisitsoeng, 'me litšenyehelo tsa tlhoekiso ea metsi li batla li phahame.

Mabapi le litekanyo tsa ts'ebetso, PAC le aluminium sulfate li na le lits'ebetso tse fapaneng hanyane; PAC ka kakaretso e bonolo ho sebetsana le eona mme e theha flocs kapele, e ntlafatsang katleho ea kalafo. Aluminium sulfate, ka lehlakoreng le leng, e lieha ho hlahisa metsi 'me e ka nka nako e telele ho hoama.

Aluminium sulfatee tla fokotsa pH le alkanility ea metsi a hloekisitsoeng, kahoo soda kapa lime ea hlokahala ho fokotsa phello. Tharollo ea PAC e haufi le ho se nke lehlakore 'me ha ho tlhokahalo bakeng sa ntho leha e le efe e fokolang (soda kapa lime).

Mabapi le polokelo, PAC le aluminium sulfate hangata li tsitsitse ebile ho bonolo ho li boloka le ho li tsamaisa. Le hoja PAC e lokela ho koaloa ho thibela ho kenngoa ha mongobo le ho pepesehela mahlaseli a letsatsi.

Ho phaella moo, ho ea ka pono ea corrosivity, aluminium sulfate e bonolo ho e sebelisa empa e senya haholoanyane. Ha u khetha li-coagulants, phello e ka bang teng ea bobeli ho lisebelisoa tsa kalafo e lokela ho nahanoa ka botlalo.

Ka kakaretso,Polyaluminium Chloride(PAC) le aluminium sulfate li na le melemo le melemo ea tsona ea ho hloekisa likhoerekhoere. Ka kakaretso, PAC butle-butle e fetoha coagulant e kholo ka lebaka la ts'ebetso ea eona e phahameng, bokhoni ba ho hloekisa metsi a litšila ka potlako le ho feto-fetoha ha pH ka bophara. Leha ho le joalo, aluminium sulfate e ntse e na le melemo e ke keng ea nkeloa sebaka tlas'a maemo a itseng. Ka hona, ha u khetha coagulant, lintlha tse kang tlhokahalo ea sebele, phello ea phekolo le litšenyehelo li lokela ho nkoa. Ho khetha coagulant e nepahetseng ho tla thusa ho ntlafatsa katleho ea kalafo ea metsi a litšila.